How it grew: Classified Ventures is cashing in on classified advertising's move from newspapers to the Internet. "Consumers can find more listings and content online than they can in any other form of media," President and CEO Dan Jauernig says. Classified Ventures is owned by five media companies, including Tribune Co., and averages more than 7 million listings nationwide a day. Revenue grew 16% last year, fueled by 28% growth for Cars.com and 15% growth for Apartments.com. In anticipation of lower advertising spending this year, Classified is focused on picking up marketshare.